.about-section {
    padding: 2rem;
    margin: 2rem auto;
    background-color: #f9f9f9;
    border-radius: 12px;
    max-width: 1000px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  }
  
.about-section h2 {
  margin-top: 0;
  text-align: center;
}

.about-section p {
  text-align: justify;
  margin-bottom: 1rem;
  font-size: 1.6rem;
}

.table-of-contents {
  margin-bottom: 2rem;
  background-color: #f1f1f1;
  padding: 1rem;
  border-radius: 8px;
}

.table-of-contents h3 {
  margin-top: 0;
}

.table-of-contents ul {
  list-style-type: disc;
  padding-left: 1.5rem;
}

.table-of-contents a {
  text-decoration: none;
  color: #0077cc;
}

.table-of-contents a:hover {
  text-decoration: underline;
}

.how-to-use_List {
  font-size: 1.4rem;
}